Website Performance Issue - add-on page

I've always found it slow to load the add-on page, but right now with relatively few add-ons it is taking about 40 seconds to load my add-on page - it seems to be something in the past week knocked it from 14 seconds to 40.

I have quite a lengthy "gifts" page and some pending gifts there, but loading the gifts page only takes 2-3 seconds for me.

So the add-ons page I can only assume is loading a lot of background information.

If I were to hazard a guess it might be because I used to have far more add-ons than I do currently and it is somehow tracking those? I hope a solution can be found, doing anything on that page is painful!